Recoverable improved casing for the manufacture of recesses

ABSTRACT

Recoverable improved casing for the manufacture of recesses, which comprises a mould with a section decreasing towards the smaller section end, the mould having some internal longitudinal and transversal reinforcing ribs, which define nodes at their point of intersection, some of these nodes having some metallic flanges in the socket that, by means of tappets, are joined to a series of rods that in turn are joined by tappets to a series of metallic interconnected crossbars, the ends of which protrude outside the mould, being joined by means of billets and with a detachable coupling with the end of the rod of a hydraulic mould extractor piston.

OBJECT OF THE INVENTION

[0001] The present utility model relates to a recoverable improvedcasing for the manufacture of recesses.

BACKGROUND OF THE INVENTION

[0002] In recesses constructed using traditional methods, it isnecessary assemble containing walls of earth that protect the placeswhere the recess blocks are to be placed.

[0003] In addition, traditional manufacture using bricks requires agreat deal of manpower, with the additional drawback that theconstruction materials occupy a great deal of space, which makes thework of the operators more difficult.

[0004] Another additional problem with the traditional construction isthat, when the decomposition of the buried body occurs, filtrations tothe outside of liquids generated by this process may occur, whichconstitutes a problem of aesthetics.

[0005] Therefore, the manufacture of recesses in reinforced concreteseems to be the most appropriate solution, given that it solves theproblems described above, but despite this, it causes anotherfundamental problem, namely, if the casing cannot be recovered, itsuffers from the same drawbacks as the traditional manufacturingprocess, while the recoverable casing has the problem that itdeteriorates due to the forces exerted when being extracted.

DESCRIPTION OF THE INVENTION

[0006] The recoverable casing of the invention, for its constitution anduse, provides all the advantages of manufacture of recesses inreinforced concrete and, in addition, has means by which finished piececan be detached before being removed, thus reducing the subsequentforces necessary to remove the casing, protecting and lengthening thelife of the recoverable casing.

[0007] In accordance with the invention, the casing consists of asingle-piece mould that comprises a laminar portion that forms aprismatic body of inverted “U” section, the smaller end of which appearsclosed. This mould is made preferably from fibreglass with internalreinforcement with a section of aluminium grid, the mould havinglongitudinal and transversal reinforcement ribs on its internal face.

[0008] The reinforcement section of aluminium grid is joined at thefront part of the mould to a perimeter rib of appropriate thickness, andat the side edges to a side socket of low height, constituted preferablyof metallic billets, which facilitates the movement of the mould duringits removal.

[0009] In its inner part, the mould has a structure consisting oftransversal rods at several heights, which are joined by means oftappets to flanges arranged on its internal walls, preferably at thenodes that form at the intersections of the interior reinforcement ribsand in the side socket, joining the rods by their opposite ends to themetallic crossbars linked to one another by a metallic section in zigzagform, these crossbars reaching protruding outside the mould, where theyare joined by billets, preferably curved, to another billet equippedwith an lug where it is coupled by means of a bolt to other protrudingparallel lugs at the end of the rod of a hydraulic piston mounted in thecentral part of a structure in the form a “C”, the branches of whichrest horizontally on the sides of the front of the recess, through theoutside of the frontal perimeter rib of the mould.

[0010] The mould is positioned over a continuous slab of reinforcedconcrete or over an adjacent lower recess. The concrete is then pouredinto the mould.

[0011] Once the concrete has set, it is stressed by means of the pistonto extract the casing, these stresses being transmitted by means of thecrossbars, rods, tappets and flanges to the walls of the mould in aslightly perpendicular direction, which causes its detachment withrespect to the piece made from concrete and a first extracting movementthereof.

[0012] This separation leaves the mould free, such that it can theneasily be extracted by pulling outwards at the perimeter protrusion.

BRIEF DESCRIPTION OF THE FIGURES

[0013]FIG. 1 shows an elevation of the mould that defines the casing ofthe invention.

[0014]FIG. 2 shows a sectioned plan of the mould that defines the casingof the invention along lines II-II of FIG. 1.

[0015]FIG. 3 shows a sectioned side view of the mould that defines thecasing of the invention along lines III-III of FIG. 1.

[0016]FIG. 4 shows details of the grid section of the reinforcement ofthe mould that defines the planking moulding of the invention.

[0017]FIG. 5 shows an upper view of the mould utensil for removal of thecasing of the invention during removal.

BRIEF DESCRIPTION OF AN EXAMPLE OF AN EMBODIMENT OF THE INVENTION

[0018] The planking moulding of the invention comprises a mould 1, offibreglass with internal aluminium grid reinforcement 2, which has aprismatic shaped decreasing inverted “U” section, whose smaller sectionend 3 is closed and whose opposite end is open.

[0019] Through end 4, the grid reinforcement 2 is joined to a metallicrib 5, while, laterally, this reinforcement is joined to an end socket6, also made of metal.

[0020] The inner part of the mould has some transversal reinforcementribs and other longitudinal ribs, with some of the nodes 9 formed by theintersection of the ribs, with some flanges 10 in the sockets forattachment, by means of some tappets 11, of overlaid metallic rods 12that, at the opposite end, are joined by means of tappets to themetallic crossbars 13, 13 a, joined to one another by means of ametallic portion 14 in the form of a zigzag, the ends 15 of which extendoutside the mould, being joined by means of curved billets 16 to abillet 17 equipped with a lug 18 for coupling by means of a bar 19, withother lugs 20 at the ends of the rod 21 of a hydraulic piston 22,mounted centrally in a structure 23 in the form of a “C”, whose ends 24rest on the sides 26 of the front of the recess.

[0021] The mould is placed over a continuous slab 26 or over anotheranalogous recess, subsequently filled with concrete, and once theconcrete has set, the casing is removed by means of sudden pullsperformed by the piston 22, which are transmitted by means of thecrossbars 13, 13 a, the rods 12 and the tappets 11 to the flanges 10,the direction being slightly perpendicular to the side walls of themould, causing it to become detached from the piece of concrete, and afirst movement, which facilitates the subsequent removal of the mould bypulling from the protrusion 5.

1. Recoverable improved casing for the manufacture of recesses, of thetypes that comprise a prismatic mould of an inverted “U” section, madefrom fibreglass with an internal metallic grid support that is joined toan end rib of greater cross-section and a lower end socket, preferablymade of metal, which in turn is joined to said end rib, characterised inthat the mould has a decreasing section, the smaller end being closed,with mould having internal longitudinal and transversal reinforcementribs, which define nodes at their point of intersection, some of thesenodes having of socket of metallic flanges that, by means of tappets,are joined to a series of rods that in turn are joined by means oftappets to a series of metallic crossbars connected to one another,whose ends extend outside the mould, being joined by billets having inthis join a lug to which, by means of a rod, other parallel lugs arecoupled, arranged at the end of the rod of a hydraulic mould removalpiston, mounted in a structure (23) in the form of a “C”, whose endsrest on the front of the recess.